By Topic

Addressing multiple indicators on a single optical fiber-digital signal processing approach for temperature compensated oxygen sensing

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Stehning, C. ; Max Planck Insitute for Marine Microbiol., Bremen, Germany ; Holst, G.A.

A digital signal processing approach for hybrid fiberoptical microoptodes based on the measurement of the luminescence lifetime of appropriate indicators is presented. Numerical algorithms are applied to resolve individual decay times in a heterogeneous luminescence emission to enable the application of optodes with multiple indicators combined on a single fiber tip. We applied a hybrid optode that senses the oxygen concentration in line with the temperature, and used the latter information to compensate for the temperature drift of the oxygen measurement. We used a blue light-emitting diode to generate the excitation signal, and a standard photodiode with integrated pre-amplifier stage to detect the luminescence signal. Both signals were sampled using a stereo audio codec, and the further signal processing routines were entirely implemented on a commercially available digital signal processing evaluation board.

Published in:

Sensors Journal, IEEE  (Volume:4 ,  Issue: 1 )